Composition containing fodder yeast waste for simultaneous scouring of metal surfaces from corrosion products, scale & scoria

Abstract

The means for simultaneous scouring of metal surfaces contains a waste product in manufacture of fodder yeast, citric acid, ammonium citrate, aqueous solution of sodium gluconate, sulphonated ricinic oil and an inorganic acid, f.e. sulphuric acid respectively in the following weight ratios: 60 to 95%; 2 to 6%; 0.1 to 10%; 0.0 to 4.0%; 0.0 to 20% and 0.0 to 15%. The waste product from fodder yeast manufacture contains itself 0.06 to 0.1% reducing agents; 0.01 to 0.4% phosphates; 0.2 to 0.4% ammonium sulphate; 0.0 to 0.06% furfurol and 0.0 to 0.1% yeast. The means for simultaneous scouring of metal surface from corrosion products, scale and scoria is used in metallurgy, machine construction, agriculture, energetics and all fields where there are conditions for metal corrosion.

We claim: 
     
       1. A composition for simultaneously scouring metal surfaces from corrosion products, scale, scoria, which consists essentially of a waste product from manufacture of fodder yeast, citric acid, ammonium citrate, aqueous solution of sodium gluconate, sulphonated ricinic oil, inorganic acid in the following weight ratios: waste product from fodder yeast: 60 to 95%   citric acid: 2 to 6%   ammonium citrate: 0.1 to 10%   sulphonated ricinic oil: 0.0 to 4.0%   aqueous solution of sodium gluconate: 0.0 to 20%   inorganic acid: 0.0 to 15%.   
     
     
       2. The composition according to claim 1 wherein the waste product from fodder yeast manufacture contains: reducing agents: 0.06 to 0.1%   phosphates: 0.01 to 0.4%   ammonium sulphate: 0.2 to 0.4%   furfural: 0.0 to 0.06%   yeast: 0.0 to 0.1%.   
     
     
       3. The composition defined in claim 2 in the form of a concentrate dilutable 1:1 with water and consisting essentially of 800 ml of said fodder yeast waste product, 5 ml of sulfonated ricinic oil, 30 g technical grade citric acid, 20 g ammonium citrate and 5 ml of sulfuric acid. 
     
     
       4. The composition defined in claim 2 in the form of a concentrate dilutable 1:1 with water and consisting essentially of 600 ml of said fodder yeast waste product, 0.8 g sulfonated ricinic oil, 15 g citric acid, 10 g ammonium acetate, and 3 ml sulfuric acid.